Tissue weighting factor
The dimensionless quantity tissue weighting factor (wT) represents the fraction of health risk attributable to the specific tissue or organ T. The factors are normalized:∑ wT = 1
| organ | wT |
|---|---|
| breast tissue | 0.12 |
| large intestine | 0.12 |
| lungs | 0.12 |
| stomach | 0.12 |
| red bone marrow | 0.12 |
| gonads | 0.08 |
| bladder | 0.04 |
| liver | 0.04 |
| thyroid | 0.04 |
| oesophagus | 0.04 |
| bone surface | 0.01 |
| brain | 0.01 |
| skin | 0.01 |
| salivary glands | 0.01 |
| remainder group | 0.12 |
The remainder group consists of the following 13 organs:
- adrenal glands
- extra thoracic region
- gall bladder
- heart
- kidneys
- lymph nodes
- oral mucosa
- pancreas
- skeletal muscle
- small intestine
- spleen
- thymus
- uterus/cervix or prostate